Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA596829A
Inventor
D. Mcintyre Brouwer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PATENT DEVELOPMENT Co
Original Assignee
PATENT DEVELOPMENT Co
Publication date
Application grantedgrantedCritical
Publication of CA596829ApublicationCriticalpatent/CA596829A/en